The Canon T3 features a digital SLR design, so the optical viewfinder offers a true, through-the-lens (TTL) display. A dioptric adjustment dial accommodates eyeglass wearers, letting them adjust ...

The Canon 7D is a digital SLR design, so the optical viewfinder offers a true, through-the-lens (TTL) image. A dioptric adjustment dial at the top-right of the eye-piece accommodates eyeglass ...